80% Cotton, 20% Nylon blend wicks moisture and is odor resistant while keeping your calves cool, dry and compressed Perfect amount of compression and stretch for a comfortable fit and maximum performance Scrunch it up for the look you want while keeping the sleeves in place all game long Double stitching around the cuffs for added durability and strength Sizing - Adult Leg Sleeves: For calves over 10" circumference (Extended length 22"). Youth Leg Sleeve: For calves under 10" circumference (Extended length 16") The Sports Unlimited Gameday Drip Scrunch Football Leg Sleeves/Calf Sleeves feature a moisture wicking and odor resistant 80% cotton, 20% nylon material blend that keeps your calves cool, dry and compressed. Stylish and functional design allows you to get the "Scrunch" look of the pros while protecting your legs from the sun, turf burn and irritation. Double stitched cuffs adds strength and durability.